The Choices Below Each Describe the Appearance of an H-

question 28

Multiple Choice

The choices below each describe the appearance of an H- R diagram for a different star cluster. Which cluster is the youngest?

• A)The diagram shows no main- sequence stars at all, but it has numerous supergiants and white dwarfs.
• B)The diagram shows main- sequence stars of every spectral type except O, along with a few giants and supergiants.
• C)The diagram shows main- sequence stars of all the spectral types except O and B, along with a few giants and supergiants.
• D)The diagram shows main- sequence stars of spectral types G, K, and M, along with numerous giants and white dwarfs.

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Definitions:

Genetic Diseases

are disorders caused by abnormalities in an individual's DNA, which can be either inherited or occur as new mutations.

Embryo

An early stage of development for multicellular organisms, in humans, it refers to the period from fertilization until the end of the eighth week of gestation.

Artificial Insemination

A medical procedure involving the direct insertion of sperm into a woman's uterus or cervix to achieve pregnancy without sexual intercourse.

Semen

The male reproductive fluid containing sperm that is ejaculated during orgasm.